Ice-cream freezer.



PATENTED MAR 31, 1908.

No; 883,570. M. A. ROWE,

ICE CREAM FREEZER.

APPLICATION FILED MAY 6, 1907.

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UNITED sTATEs PATENT oFFIoE.

MARY A. ROWE, OF WEST HOBOKEN, NEW JERSEY.

ICE-CREAM FREEZER.

To all whom it may concern:

Be it known that I, MARY A. ROWE, a citizen of the United States, and a resident of West Hoboken, in the county of Hudson and State of New Jersey, have invented a new and Improved Ice-Cream Freezer, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in ice cream freezers, and the object of the invention is to provide a freezer in which a plurality of different substances may be frozen at the same time in the same device, and the materials thoroughly and efficiently agitated without the use of special stirring mechanism. The containers for the mate rials to be frozen are provided with a central tube, whereby the freezing medium may be applied both externally and internally, and at the same time an annular chamber is formed within which the materials'are caused to rapidly circulate in opposite directions upon the oscillation of the containers.

The invention consists in certain features of construction and combination of parts, all of which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the figures, and in which Figure 1 is a central vertical section through a freezer embodying my invention;

and Fig. 2 is a top plan View thereof on a smaller scale.

In my improved freezer I employ an outer tub-1O of any suitable construction com monly employed for similar purposes, and Within the tub and spaced therefrom is located the main freezing can 11. The can is spaced from the tub a sufficient distance for the reception of the freezing medium, and is supported at the bottom upon a suitable spider or bracket 12 having a pivot pin fitting within a socket within a base plate 13. The can is provided with a centrally disposed tube 14 extending upward therethrough, and the space within the tube is in open communication with the tub at the top and bottom thereof. The can is adapted for the Specification of Letters Patent.

Application filed. May 6, 1907.

Patented March 31, 1908.

Serial No. 372,243.'

freezing of a plurality of different substances at the same time, and to provide for the reception of these substances, I construct one or more secondary or smaller cans fitting within the outer can and each serving to receive a different substance.

In. the specific form of my invention illustrated in the accompanying drawings, there are provided two separate interior cans 15 and 16, each annular in form, and each of a volume substantially equal to one-third of the mainv outer can 11. For supporting these inner cans, the can 11 is provided with suitable lugs or projections extending inwardly from the outer wall thereof and at approximately one-third the height of the can. These lugs or projections may be of any form whatsoever, but preferably comprise a single annular bead 17 extending inwardly from the outer wall of the can 11 and serving as a shoulder to support the can 15. The last mentioned can is of slightly smaller diameter than the can 11, and the central tube 18 of this can is slightly larger than the central tube 141 of the can 11, whereby the can 15 may be readily slipped into place and rest upon the head 17. For preventing any material from the can 1.5 overflowing or becoming spilled from the space between this can and the outer one, I provide both the outer wall of the can 15 and the tube 18 with flanges which engage with the outer wall. of the can 1.]. and the tube 14. These flanges serve to effectively seal the upper end of the two annular spaces and prevent the entrance of any material into said spaces. For removing the can 15, it is preferably provided with two inwardly directed lugs 19 upon opposite sides thereof, as is clearly indicated m Fig. 1.

The second interior can 16 is exactly the same as the can 15, and rests directly upon the flanges of said can. If desired, the outwardly extending flange 20 of the can 16 may rest upon the top of the outer wall of the can 11 to more effectively support the can and prevent the entrance of any spilled material into the space between said cans. The top of the can 11 is provided with a closure 21, preferably annular in form and having an inner flange 22 engaging with the inner surface of the tube 1 1, and an outer flange 23 engaging with the outer surface of the main wall of the can. The can of the tube, preferably the former, is provided with any suitable form of projection or lug 2 1 engaging in recesses in the corresponding flange of the can, whereby the can may be caused to rotate by the rotation of the cover.

In the operation of my improved freezer, the material to be frozen is placed in the outer can 11, and a second and third substance may be placed in the cans 15 and 16, and the parts assembled as shown in the drawings. The refrigerant material contacts with. the outer wall of the can 11 and also with the tube 14, whereby the annular chambers are cooled both externally and internally. To agitate the mate jial and secure an even and uniform freezing thereof, means are provided for oscillating all of the cans. The can is moved first in one direction and then in the other, whereby the cream or other substance is caused. to circulate back and forth in opposite directions in the annular space, and become as effectively agitated as though. a special agitator were provided. Any suitable means may be provided for rapidly rotating the can 11 first in one direction and then in the other, the mechanism illustrated in the drawings merely comprising one form suitable for the pur ose.

As illustrated, the can cover 21 is. provided with a bevel ear 25 upon the surface thereof, and directfiy above the can is mounted a suitable shaft 26 having its ends journaled upon the opposite sides of the hub 10, and having a suitable operating handle 27. Slidably mounted upon the shaft and rotatable therewith, is provided a sleeve 28 having annular flanges 29 and 30 adjacent its ends, and bevel gears 31 and 32, either one of which may be brought into mesh with the bevel gear 25. For reversing the direction of rotation of the can, I provide the cover 21 with a plurality of lugs adapted to engage with the flanges 29 and move the sleeve longitudinally to move one gear wheel out of engagement with the gear 25 and bring the other gear wheel into mesh therewith. These lugs are preferably three in number, all of them so located as to engage with the flanges 29 and 30. The shape and position of the lugs are more clearly shown in Fig. 2, and the reversing operation is secured in the following manner: Starting with the parts in the position indicated in Fig. 2, a rotation of the handle in the direction indicated by the arrow, will cause the can and cover to rotate. The lug 33 passes the flange 29 without engaging therewith, but at approximately the time the lug 33 reaches the other surface of ssaero surface of the flange 29 and by reason. of the inclined surface of said lug, moves the flange longitudinally until the gear wheel 3 31 no longer meshes with the gear wheel 25, and the gear wheel 32 is brought into mesh therewith. As soon as the gear wheel 32 comes into operation, the can starts rotating in the opposite direction, but the teeth of the two gear wheels are not thoroughly and com pl etel y in mesh with each other. The lug which has previously passed the flange 29 without engaging therewith, now upon the return movement engages with the inner surface of the flange and pushes it still further out ward to the limiting position, and brings the gear wheels 32 and 25 into full and complete engagement. The parts continue thus rotating in this direction until the lug 3-1 reaches the flange 30, at which time a second reversal takes place. A third lug 35 is provided similar to the lug 83 and oppositely disposed in respect thereto, which lug sert es to force the flange 30 outward to its limiting position. and effect the full and complete engagement of the gear 3]. with the gear 25.

By means of the mechanism above described, a plurality of different Substances nular chamber and the oscillating motion, a

far more thorough agitation and effective freezing is secured than is otherwise possible without the use of an agitator.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent:

1. In an ice-cream freezer, the combination of a freezing can having concentric walls forming therebetween an annular chamber, one of said walls presenting an inwardly-directed projection intermediate the height thereof, a second annular can sup ported within the first-mentioned can and upon said projection, a cover common to both of said cans, and means in engagement with said cover for oscillating the cans.

2. In an ice cream freezer, the combination of a freezing can having a centrally disposed open-ended tube adapted to receive a freezing agent and forming with the walls thereof an annular chamber, an inwardly directed bead upon the wall of said can intermediate the height thereof, a second an nular can supported within the first mentioned can and upon said. bead, said last the flange, the lug 34 engages with the inner i mentioned. can having flanges adapted to engage with the outer wall of said can and said In testimony whereof I have signed my tube, inwardly directed lugs within said name to this specification in the presence of second can and serving as handles to facilitwo subscribing witnesses. tate the removal thereof, a common cover MARY A. ROWE.

5 for said outer and inner cans, and means in Witnesses:

engagement with said cover for oscillating CLAIR W. FAIRBANK, said cans. JOHN P. DAVIS. 

